BRAND NEW NEVER USED 4"X 6" FENCE POST CAPS . MADE IN AMERICA !!!! SMOOTH SEAMLESS PLASTIC CAP , VERY DURABLE A FULL 1/8 INCH THICK , TO PROTECT YOUR TREATED POSTS FROM WATER AND SUN DAMAGE. CAP PRESSES OVER THE OUT SIDE OF A 4X6 POST . CAP CAN BE INSTALLED USING A NAIL THRU THE CENTER OF THE CAP IN THE SUPPORTED HOLE . THE HOLE IS PARTIALLY THERE BUT NOT COMPLETELY THRU UNTIL YOU COMPLETE THE HOLE WITH EITHER THE NAIL OR A SMALL DRILL. OR THE CAPS CAN BE GLUED ON IF YOU PREFER. THE EXACT INSIDE DIMENSION OF THIS CAP IS 3 5/8X 5 5/8 . I ALSO HAVE THIS STYLE CAP AVAILABLE FOR YOUR 4X4 AND 6X6 PRESSURE TREATED POSTS , CHECK MY OTHER LISTINGS FOR THESE AND OTHER RELATED ITEMS. CHECK MY FEEDBACK AND SEE WHAT OTHERS HAVE SAID ABOUT THESE CAPS. MICHIGAN RESIDENTS WILL BE CHARGED 6% SALES TAX. WE WILL SHIP EITHER USPS FIRST CLASS MAIL , PRIORITY MAIL OR UPS GROUND BASED UPON THE MOST ECONOMICAL METHOD FROM THE QUANTITY YOU PURCHASE . FEEL FREE TO E-MAIL WITH ANY QUESTIONS YOU MAY HAVE. THANKS FOR LOOKING AND GOOD LUCK. CHECK OUT OUR U-TUBE VIDEO FOR INSTALLATION INSTRUCTIONS. http://youtu.be/NZnv7g2oD7o IF YOU NEED COLORS OTHER THAN BLACK OR WHITE CHECK THIS OUT FOR OTHER OPTIONS. http://youtu.be/K-ruC7ya56Q MADE IN THE USA!!!!!!!!